1·The isothermal transformation diagram (TTT)is an important basis to make a heat treatment process of steels.
TTT图是制定钢的热处理工艺的重要依据。
2·The retained austenite and its stability of transformation induced plasticity (TRIP) steel after isothermal bainitic transformation were investigated using SEM, TEM and XRD.
采用扫描电镜、透射电镜、X射线衍射仪等对贝氏体等温转变后TRIP钢中的残余奥氏体及其稳定性进行了研究。
3·The structure evolution of AZ91D magnesium alloy and the modified AZ91D magnesium alloy during semi solid isothermal heat treatment was studied, and its transformation mechanism was also discussed.
研究了未变质处理和变质处理的AZ 91d镁合金在半固态等温热处理过程中的组织演变，并对其组织演变机理进行了探讨。
4·The phase transformation and weight loss rate of ludwigite in oxidizing roasting were studied by DTA-TG, isothermal TG and XRD.
利用DTA - TG、恒温tg和XRD测试方法研究了硼铁矿氧化焙烧过程中的相变和失重率。